19 | Keysight | FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50 GHz - Data Sheet
Mixed-Mode S-Parameters
Mixed-mode S-parameters are also known as balanced measurements.
Measurements
Scc11
Sdd11
Scd11
Sdc11
Common mode reflection
Differential mode reflection
Differential mode stimulus, common mode response
Common mode stimulus, differential mode response
FieldFox’s mixed-mode S-parameter measurements require the use of the default factory calibration or a user 2-port calibration. So
the FieldFox analyzer must be equipped with 2-port measurement functionality to measure mixed-mode S-parameters. Mixed-mode
S-parameters are an extension of the VNA capabilities.
Vector Voltmeter (VVM)
With vector voltmeter mode, you can characterize the difference between two measurements easily. The zeroing function allows you to
create a reference signal, and characterize the difference between two device measurements. The results are shown on a large display
in digital format.
Models
Frequency range
30 kHz to 4 GHz
N991xA, N992xA
N9913A
N9914A
30 kHz to 6.5 GHz
30 kHz to 9 GHz
N9915A, N9925A
N9916A, N9926A
N9917A, N9927A
N9918A, N9928A
N9950A
30 kHz to 14 GHz
30 kHz to 18 GHz
30 kHz to 26.5 GHz
300 kHz to 32 GHz
300 kHz to 44 GHz
300 kHz to 50 GHz
N995xA
N9951A
N9952A
Setup parameters
1-port cable trimming
2-port transmission
A/B and B/A
Reflection or S11 measurement, magnitude and phase
Transmission or S21 measurement, magnitude and phase
Ratio of two receivers or channels, magnitude and phase – Need an external signal generator for the A/B or B/A
measurement
Frequency (one CW frequency point), IF bandwidth - 10 Hz to 100 kHz, output power - Low or high
Ratio accuracy (A/B and B/A)
Must zero, before measuring DUT. Recommend using a high-quality power splitter or 6 dB attenuators to minimize uncertainty due to
mismatch.
Frequency
Nominal
± 1.0
N991xA, N992xA, N995xA
100 to 300 kHz1
> 300 kHz to 1 MHz
> 1 to 100 MHz
> 100 to 300 MHz
> 300 MHz to 1.5 GHz
> 1.5 to 2 GHz
± 0.4
± 0.2
± 0.4
± 0.6
± 1.0
1. Does not apply to N995xA models, which start at 300 kHz.
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